Drip irrigation under plastic film in Commercial Greenhouse combines the advantages of plastic film covering and drip irrigation, making it the most effective way to reduce humidity inside the vehicle.
The method involves creating raised beds, placing drip irrigation pipes in the center of the beds, and then covering them with plastic film. Using drip irrigation in a greenhouse can prevent soil compaction and a drop in soil temperature, effectively preventing a significant increase in air humidity caused by watering. It also reduces the frequency of watering, thus lowering air humidity.
Hanging reflective screens on Greenhouse can improve soil and air temperature. Since relative humidity decreases as temperature rises, hanging reflective screens also has a certain dehumidifying effect.
The application method for pesticides should be changed from spraying to a combination of fumigation, misting, and dusting. It is important to note that the fumigation time should generally not exceed 8 hours, and ventilation should be carried out promptly after fumigation to remove harmful gases from the greenhouse and prevent pesticide damage.
Additionally, when spraying powdered pesticides, the particles fall from top to bottom, creating a lot of powder adhering to the upper surface of the leaves, affecting photosynthesis. Therefore, it is not advisable to use this method continuously; it should be used separately from spraying and fumigation.
If the humidity inside the greenhouse is too high, some straw, wheat straw, wood ash, or fine dry soil can be scattered between the rows. Alternatively, quicklime or other moisture-absorbing materials can be piled up in unused areas inside the greenhouse.
Every so often, on a sunny day, the straw, wheat straw, quicklime, etc., should be moved outside the greenhouse for sun exposure and reused repeatedly